EP2704275B1 - Loading/unloading apparatus for storage of withdrawable switchgear installations - Google Patents

Loading/unloading apparatus for storage of withdrawable switchgear installations Download PDF

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Publication number
EP2704275B1
EP2704275B1 EP13181161.4A EP13181161A EP2704275B1 EP 2704275 B1 EP2704275 B1 EP 2704275B1 EP 13181161 A EP13181161 A EP 13181161A EP 2704275 B1 EP2704275 B1 EP 2704275B1
Authority
EP
European Patent Office
Prior art keywords
cage
cubicle
boom
electric appliance
winch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP13181161.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2704275A1 (en
Inventor
Mitsutaka Ono
Mineyasu Morimoto
Kazuhiro Umeo
Eiji Masuda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yaskawa Electric Corp
Original Assignee
Yaskawa Electric Corp
Yaskawa Electric Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yaskawa Electric Corp, Yaskawa Electric Manufacturing Co Ltd filed Critical Yaskawa Electric Corp
Publication of EP2704275A1 publication Critical patent/EP2704275A1/en
Application granted granted Critical
Publication of EP2704275B1 publication Critical patent/EP2704275B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G1/00—Storing articles, individually or in orderly arrangement, in warehouses or magazines
    • B65G1/02—Storage devices
    • B65G1/04—Storage devices mechanical
    • B65G1/06—Storage devices mechanical with means for presenting articles for removal at predetermined position or level
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00—Switchgear having carriage withdrawable for isolation
    • H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal

Definitions

  • Embodiments disclosed herein relate to a loading/unloading apparatus.
  • a loading/unloading apparatus of, e.g., crane type has been used in repairing and maintaining electric appliances such as power-converting power cells stacked within a cubicle (see, e.g., Japanese Utility Model Application Publication No. H3-120610 ).
  • the loading/unloading apparatus disclosed in the above-cited reference has a configuration in which a detachable rail provided with a hoist is attached to a ceiling portion of a facility.
  • the conventional loading/unloading apparatus cited above is hardly applicable to, e.g., a facility that accommodates power-converting power cells for use in wind power generation. More specifically, in reality, the power-converting power cells for use in wind power generation are relatively heavy and cannot be easily unloaded from the facility. It is also difficult to move the unloaded power cells to a specified place.
  • the facility is built within a wind power generation tower. However, it is often the case that the effective space existing within the tower is extremely narrow. Thus, a need has existed for a loading/unloading apparatus which is small in size and easy to handle.
  • JP H01134909 U dislcoses a loading/unloading apparatus, comprising: a cage configured to accommodate an electric appliance stored or to be stored in one of storage compartments provided within a cubicle; and a hoist configured to vertically move and hang the cage, wherein the hoist includes a boom arranged on the cubicle to extend above the storage compartments and a hoisting winch attached to the boom, and the cage includes a frame body provided with a seat for supporting the electric appliance, and a connector unit connected to the hoisting winch.
  • a loading/unloading apparatus as defined in claim 1 is provided.
  • the dependent claims show some examples of such a loading/unloading apparatus.
  • embodiments disclosed herein provide a loading/unloading apparatus capable of easily conveying an electric appliance as a heavy object stored in a stacked state to a specified place even in a narrow space.
  • a loading/unloading apparatus includes a cage configured to accommodate an electric appliance stored or to be stored in one of storage compartments provided within a cubicle; and a hoist configured to vertically move and hang the cage.
  • the hoist includes a boom arranged on the cubicle to extend above the storage compartments and a hoisting winch attached to the boom.
  • the cage includes a frame body provided with a seat for supporting the electric appliance, and a connector unit connected to the hoisting winch.
  • Fig. 1 is a schematic view showing the entirety of a cubicle 1 provided with a loading/unloading apparatus 2 according to one embodiment.
  • the cubicle 1 according to the present embodiment includes a box-shaped casing 11 provided with a plurality of storage compartments 10.
  • the cubicle 1 is arranged in a specified power generation facility or the like.
  • Each of the storage compartments 10 is configured to store an electric appliance 3, e.g., a power-converting power cell.
  • An air cooling device 15 for cooling the inside of the cubicle 1 is arranged on a ceiling surface 14 of the cubicle 1. While the air cooling device 15 is described by way of example in the present embodiment, there may be provided a water cooling device.
  • each of the storage compartments 10 each storing the electric appliance 3 are formed in a lattice pattern.
  • the front opening of each of the storage compartments 10 serving as a gate of the electric appliance 3 is closed by a lid 13.
  • An air suction unit 12 communicating with the inside of each of the storage compartments 10 and having a filer arranged therein is formed in the lid 13. While the number of the storage compartments 10 is nine in the present embodiment, it is also possible to appropriately set the number of the storage compartments 10 as necessary.
  • a loading/unloading apparatus 2 includes a cage 4 for loading the electric appliance 3 into each of the storage compartments 10 or for holding the electric appliance 3 taken out from any of the storage compartments 10 and a hoist 5 for vertically moving and hanging the cage 4 in which the electric appliance 3 is held.
  • the hoist 5 includes a boom 6 installed upright on the ceiling surface 14 of the casing 11 of the cubicle 1 and a hoisting winch 7 attached to the boom 6 and configured to move the cage 4 up and down through a suspending wire 71.
  • the ceiling surface 14 of the casing 11 is formed into a rectangular shape.
  • a lower post 61 making up a portion of the boom 6 is installed upright at the substantially central position of the frontal region of the ceiling surface 14 (where the frontal region refers to the region existing at the side of the lid 13 of the cubicle 1).
  • An upper arm 62 extends from the lower post 61 in the horizontal direction.
  • the hoisting winch 7 is attached to the upper arm 62.
  • the upper arm 62 is attached to the lower post 61 so as to horizontally swing with respect to the lower post 61.
  • the upper arm 62 can be swung into alignment with the positions of a plurality of (three in the present embodiment) columns of the storage compartments 10 formed in multiple stages (three stages in the present embodiment).
  • the air cooling device 15 for cooling the inside of the cubicle 1 is arranged at the rear side of the boom 6.
  • the cage 4 includes a frame body 40 provided with a seat 41 for supporting the electric appliance 3, and a connector unit connected to the hoisting winch 7.
  • the connector unit is formed of eye bolts 42 arranged at four upper corners of the frame body 40 having a substantially rectangular parallelepiped shape.
  • the connector unit is not limited to the eye bolts 42 but may have any configuration as long as the suspending wire 71 can be connected to the connector unit.
  • Running wheels 43 are provided at four lower corners of the frame body 40. Due to the provision of the four travel wheels 43, the cage 4 can be moved on a floor surface by pushing the frame body 40 with hands.
  • the electric appliance 3 stored in one of the nine storage compartments 10 can be held within the cage 4.
  • the cage 4 can be moved up and down by hanging the cage 4 on the suspending wire 71 suspended from the upper arm 62 of the hoist 5. After the cage 4 is placed on a floor surface, the cage 4 can be moved to a desired place using the travel wheels 43.
  • the loading/unloading apparatus 2 includes the cage 4 for holding the electric appliance 3 to be stored in any of the storage compartments 10 formed in a lattice pattern within the cubicle 1 and the hoist 5 for vertically moving and hanging the cage 4 in which the electric appliance 3 is held.
  • the hoist 5 includes the boom 6 installed upright on the ceiling surface 14 of the cubicle 1 and the hoisting winch 7 attached to the boom 6.
  • the cage 4 includes the frame body 40 provided with the seat 41 for supporting the electric appliance 3 and the eye bolts 42 (the connector unit) connected to the hoisting winch 7.
  • Fig. 2A is an explanatory view showing the folded state of a trestle 47 of the cage 4.
  • Fig. 2B is an explanatory view showing the unfolded use state of the trestle 47.
  • the cage 4 includes the seat 41 having a rectangular shape.
  • the side of the cage 4 indicated by an arrow A in Fig. 2A namely the side of the cage 4 at which the trestle 47 is arranged, will be referred to as a front side.
  • Vertical frames 44 are installed upright at four corners of the seat 41.
  • the upper ends of the vertical frames 44 existing at the front side and the upper ends of the vertical frames 44 existing at the rear side are connected by first horizontal frames 45.
  • the first horizontal frames 45 are connected by second horizontal frames 46, thereby providing a rigid frame body 40 having a substantially rectangular parallelepiped shape.
  • the trestle 47 capable of being bridged over any of the storage compartments 10 of the cubicle 1 is arranged at the front side of the frame body 40 in a foldable manner.
  • the trestle 47 is pivotally connected to the frontal edge of the seat 41 and is capable of being folded and unfolded.
  • the trestle 47 may be pivotally connected to the frame body 40.
  • the trestle 47 can be operated such that the trestle 47 is folded in the cage 4 in an upstanding state as shown in Fig. 2A when not in use but is unfolded as shown in Fig. 2B when in use. When unfolded, the trestle 47 is bridged between the cage 4 and any of the storage compartments 10 of the cubicle 1 so that the electric appliance 3 can be smoothly moved between the corresponding storage compartment 10 and the cage 4.
  • the electric appliance 3 is provided on its lower surface with four casters 32 (see Fig. 13 ) and can be moved by rotating the casters 32.
  • the eye bolts 42 are arranged at four upper corners of the frame body 40. As stated above, the four eye bolts 42 make up the connector unit connected to the hoisting winch 7 through the suspending wire 71.
  • the cage 4 includes a winding winch 8 for taking out the electric appliance 3 stored in any of the storage compartments 10.
  • the winding winch 8 is arranged in one longitudinal side of the seat 41.
  • Fig. 3A is a front perspective view of the hoist 5.
  • Fig. 3B is a rear perspective view of the hoist 5.
  • the hoist 5 includes the boom 6 and the hoisting winch 7 arranged on the boom 6.
  • the hoisting winch 7 includes an upper hook 73 connected to a winch attachment unit 72 to be described later and a lower hook 74 to which the suspending wire 71 is connected.
  • the boom 6 includes the lower post 61 installed upright on the ceiling surface 14 of the cubicle 1 and the upper arm 62 extending from the lower post 61 in the horizontal direction.
  • the hoisting winch 7 is attached to the upper arm 62 through the winch attachment unit 72.
  • the lower post 61 includes a seat plate 611 fixedly secured to the ceiling surface 14 of the cubicle 1, a rectangular vertical plate 612 attached onto the seat plate 611, and an upper hinge portion 613a and a lower hinge portion 614a arranged on one major surface of the vertical plate 612 with a specified interval left therebetween in the up-down direction.
  • the upper arm 62 is swingably attached to the lower post 61 through an upper pivot shaft 613, the upper hinge portion 613a and a lower pivot shaft 614 of the lower hinge portion 614a.
  • ribs 618 for interconnecting one major surface of the vertical plate 612 and the upper surface of the seat plate 611 are arranged below the lower hinge portion 614a.
  • the upper arm 62 includes a base member 621 formed into a substantially L-like shape and extending in the vertical direction in a parallel relationship with the upright lower post 61 and a horizontal member 622 extending in the horizontal direction from the upper end of the base member 621.
  • the lower end portion of the base member 621 is connected to the lower pivot shaft 614, and the base end portion of the horizontal member 622 is connected to the upper pivot shaft 613.
  • the lower post 61 of the boom 6 includes a positioning part 63 configured to fix the horizontally-swingable upper arm 62 at any of specified swing angles.
  • a winch attachment part 64 for allowing the hoisting winch 7 to be attached to a specified longitudinal position of the upper arm 62 is formed in the upper arm 62.
  • the positioning part 63 is formed into a plate shape and is provided with first to fourth positioning holes 631 to 634 (see Figs. 5A through 5D ) into which a positioning pin 65 is selectively inserted. As shown in Figs. 3A and 3B , the positioning part 63 is arranged on the front surface of the vertical plate 612 between the upper hinge portion 613a and the lower hinge portion 614a.
  • the winch attachment part 64 is formed of a flange existing at the left and right side of the horizontal member 622 of the upper arm 62 and is configured to serve as a rail.
  • the winch attachment unit 72 is slidably attached to the winch attachment part 64 serving as a rail in such a state that the winch attachment unit 72 grips the winch attachment part 64.
  • the hoisting winch 7 is hung on the winch attachment unit 72.
  • the winch attachment unit 72 includes rolling wheels 721 capable of rolling on the flange and an engaging portion 722 on which the upper hook 73 of the hoisting winch 7 is hung.
  • a plurality of reinforcing ribs 615, 616 and 617 is provided on the rear surface of the lower post 61.
  • the reinforcing ribs 615, 616 and 617 are arranged in a corresponding relationship with the specified swing angles of the upper arm 62.
  • the reinforcing ribs 615, 616 and 617 are provided on the rear surface of the vertical plate 612 of the lower post 61 at specified intervals, and the specified intervals are set in one-to-one correspondence to the swing angles of the upper arm 62.
  • the reinforcing ribs 615, 616 and 617 are arranged in a radial pattern when seen in a plan view such that, when the upper arm 62 is fixed at one of the specified swing angles, one of the reinforcing ribs 615, 616 and 617 and the upper arm 62 exist on the same imaginary vertical plane.
  • the electric appliance 3 as a relatively heavy object having a weight of, e.g., 90 to 100 kg, is hung on the hoisting winch 7, a relatively large load is applied to the vertical plate 612 of the lower post 61. Since the reinforcing ribs 615, 616 and 617 are formed to extend in the load acting direction, it is possible to prevent the vertical plate 612 from being bent or buckled.
  • Figs. 4A through 4D are explanatory views illustrating the use state of the loading/unloading apparatus 2.
  • Figs. 5A through 5D are explanatory views showing the positioning part 63 of the hoist 5.
  • the storage compartments 10 positioned in the lowermost stage of the respective columns are used as targets. Needless to say, the storage compartments 10 positioned in the second stage or the third stage may also be used as targets.
  • the upper arm 62 of the hoist 5 is located and fixed at a first swing angle.
  • the first to fourth positioning holes 631 to 634 are formed in the positioning part 63.
  • the first to fourth positioning holes 631 to 634 are arranged in the positions corresponding to the swing angles of the upper arm 62. Accordingly, if one of the storage compartments 10 of the left column when seen from the front side of the cubicle 1 is used as a target as shown in Fig. 4A , the positioning pin 65 is inserted into the first positioning hole 631 through a hole (not shown) of a fixing piece 62a provided at the upper arm 62 as shown in Fig. 5A .
  • the positioning pin 65 is connected to the vertical plate 612 of the lower post 61 by a connecting string (651).
  • the upper arm 62 of the hoist 5 is located and fixed at a second swing angle.
  • the positioning pin 65 is inserted into the second positioning hole 632 through the hole of the fixing piece 62a of the upper arm 62.
  • the upper arm 62 of the hoist 5 is located and fixed at a third swing angle.
  • the positioning pin 65 is inserted into the third positioning hole 633 through the hole of the fixing piece 62a of the upper arm 62.
  • the winch attachment unit 72 for hanging the hoisting winch 7 is slidable along the winch attachment part 64. For that reason, even if the upper arm 62 is fixed at any one of the first to third swing angles in alignment with the column to which the storage compartment 10 as a target belongs, the winch attachment unit 72 slides on the winch attachment part 64. Thus, the hoisting winch 7 can always be positioned just above the cage 4.
  • the upper arm 62 of the hoist 5 is fixed at a fourth swing angle, namely in the position where the upper arm 62 is accommodated within the ceiling surface 14 of the cubicle 1 as shown in Fig. 4D .
  • the positioning pin 65 is inserted into the fourth positioning hole 634 through the hole of the fixing piece 62a of the upper arm 62.
  • the cage 4 is stored in a suitable place.
  • the cage 4 may be stored in a surplus space on the ceiling surface 14 of the cubicle 1.
  • FIGS. 6A through 11 are explanatory views showing the configuration of bumper parts 48 serving as a part of the fixing unit of the cage 4.
  • FIGs. 7A through 7D are explanatory views showing the use procedure of the trestle 47 and the fixing unit.
  • Figs. 8A through 8D are explanatory views illustrating the operation of the engaging part 49.
  • the engaging part 49 serves as a part of the fixing unit of the cage 4 according to the present embodiment.
  • Fig. 9 is an explanatory view showing a state where the cage 4 is fixed to the cubicle 1.
  • Fig. 10 is an enlarged view of the region S indicated in Fig. 9 .
  • Fig. 11 is an explanatory view showing a state where the cage 4 is bridged over the cubicle 1.
  • the cage 4 includes the bumper parts 48 for stably supporting the cage 4 while preventing the cage 4 from colliding with or making direct contact with the front surface of the cubicle 1.
  • the bumper parts 48 are arranged below the trestle 47 (see Figs. 2A and 2B ) existing at the front side of the frame body 40.
  • each of the bumper parts 48 includes a base portion 481 whose base end is fixed to the seat portion 41, a swingable portion 483 provided at its tip end with a pad 482 made of resin such as rubber or the like, and a hinge 484 for interconnecting the base portion 481 and the swingable portion 483 in a foldable manner.
  • the swingable portion 483 is folded inward with the pad 482 facing toward the cage 4.
  • the swingable portion 483 is swung 180 degrees as shown in Fig. 6B so that the pad 482 can face outward and can protrude from the frame body 40.
  • Fig. 7A shows the non-use state of the trestle 47 and the engaging part 49. This state is assumed to be an initial state. As shown in Fig. 7A , when not in use, the trestle 47 is folded within the frame body 40 of the cage 4 in an upstanding state. The trestle 47 is merely connected to the seat portion 41 by a hinge 472 (see Fig. 7C ) and, as shown in Figs. 7A and 7B , the trestle 47 is held in the upstanding state by a stopper 441 provided at each of the front vertical frames 44.
  • the stopper 441 includes a knob portion 442 and a cutout portion 443 engaging with a locking pin 471 of the trestle 47.
  • the engaging part 49 includes a hook-shaped claw portion 491 formed in the tip end portion thereof and a slot 492 formed in the base end portion thereof.
  • the frame body 40 of the cage 4 is provided with an engaging-member attachment portion 50.
  • a pin 52 protruding from the engaging-member attachment portion 50 is inserted into the slot 492 of the engaging part 49.
  • a stopper body 53 protrudes from the engaging-member attachment portion 50 to make contact with the base end portion of the engaging part 49 kept in an upstanding state. Since the engaging part 49 kept in an upstanding state makes contact with the stopper body 53, it is impossible to push the engaging part 49 forward.
  • the engaging part 49 is first lifted up (see Fig. 8B ) and is then laid down forward (see Fig. 8C ).
  • the engaging part 49 is locked to a beam member 16 (see Figs. 9 and 10 ) arranged at the side of the storage compartments 10 of the cubicle 1 in the state where the engaging part 49 is laid down forward. As shown in Fig. 7C , the stopper 441 is released to lay down the trestle 47 forward. Thereafter, the engaging part 49 is pushed toward the cage 4, thereby reliably fixing the cage 4 to the front end of the storage compartment 10.
  • a set screw 51 provided in the engaging-member attachment portion 50 is threadedly coupled to the base end portion of the engaging part 49, thereby pulling and fixing the engaging part 49.
  • the cage 4 can be reliably fixed to the front side of the cubicle 1 as illustrated in Figs. 9 through 11 .
  • the upper arm 62 of the hoist 5 is swung into alignment with a desired column.
  • the empty cage 4 is lifted up by the hoisting winch 7.
  • the lifting operation is stopped when the cage 4 comes into alignment with the storage compartment 10 of the desired stage.
  • the cage 4 is fixed to the front side of the cubicle 1 using the fixing unit (the bumper part 48 and the engaging part 49) and the trestle 47.
  • an auxiliary plate 110 is installed between the trestle 47 and the storage compartment 10. More specifically, in the cubicle 1 of the present embodiment, an internal clearance is formed between the surface for substantially supporting the electric appliance 3 within the storage compartment 10 and the front surface of the cubicle 1. This internal clearance is filled with the auxiliary plate 110.
  • the electric appliance 3 existing inside the storage compartment 10 can be smoothly moved to the cage 4.
  • the electric appliance 3 accommodated within the cage 4 can be smoothly moved into the storage compartment 10.
  • the cage 4 is provided with the fixing unit that includes the bumper part 48 capable of making contact with the front surface of the cubicle 1 and the engaging part 49 for engaging with the cubicle 1 to hold the cage 4 in place in a state that the cage 4 is spaced apart from the cubicle 1 at a specified interval.
  • the fixing unit that includes the bumper part 48 capable of making contact with the front surface of the cubicle 1 and the engaging part 49 for engaging with the cubicle 1 to hold the cage 4 in place in a state that the cage 4 is spaced apart from the cubicle 1 at a specified interval.
  • the winding winch 8 provided for the cage 4 is used in unloading the electric appliance 3 from the inside of the storage compartment 10.
  • Fig. 12 is an explanatory view showing the winding winch 8.
  • Fig. 13 is an explanatory view showing a wire guide unit 85.
  • the winding winch 8 is detachably attached to one longitudinal side of the seat portion 41 of the cage 4.
  • the winding winch 8 includes a winding wire 83, a drum 81 wound with the winding wire 83, and a handle 82 for manually rotating the drum portion 81.
  • the electric appliance 3 as a heavy object can be easily moved into the cage 4 by bringing a connector 84 such as a carabiner or the like, which is attached to the tip end of the winding wire 83, into engagement with a grip 31 arranged on one surface of the electric appliance 3 and rotating the handle 82 to rewind the winding wire 83 around the drum portion 81.
  • a connector 84 such as a carabiner or the like
  • the winding winch 8 is detachable, it may be possible to remove the winding winch 8 if there is no need to use the winding winch 8. This makes it possible to eliminate an obstacle protruding from the cage 4 and to reduce the weight of the cage 4.
  • the winding wire 83 is led from the drum portion 81 to the rear side of the cage 4, namely to the front side in Fig. 12 . Then, the winding wire 83 is direction-changed to extend toward the substantially central portion of the cage 4 via the wire guide unit 85 arranged along the rear edge of the frame body 40 of the cage 4.
  • the wire guide unit 85 includes guide rollers 851 respectively arranged in the substantially central position of the rear edge of the frame body 40 of the cage 4 and in one lateral end position of the rear edge of the frame body 40 near the winding winch 8.
  • the cage 4 is provided with the wire guide unit 85 for guiding the winding wire 83 interconnecting the winding winch 8 and the electric appliance 3, it is possible to easily perform the unloading task of the electric appliance 3 with the winding winch 8.
  • the electric appliance 3 is provided with four casters 32.
  • the seat 41 of the cage 4 has recess portions 410 for dropping at least two front casters 32 therein.
  • the casters 32 existing at the front side are dropped into the recess portions 410 and are restrained from rolling. For that reason, it is possible to prevent the electric appliance 3 as a heavy object from moving inadvertently.
  • the cage 4 includes the appliance fixing unit 9 for fixing the electric appliance 3 to the cage 4 in a state where the electric appliance 3 is accommodated within the cage 4.
  • Figs. 14A and 14B are explanatory views showing the appliance fixing unit 9 of the cage 4. As shown in Figs. 14A and 14B , the appliance fixing unit 9 is arranged to overlap in the front-rear direction with the guide roller 851 of the wire guide unit 85 positioned in the substantially central position of the rear edge of the seat 41.
  • the appliance fixing unit 9 includes a guide plate 93 installed upright on the seat portion 41 of the cage 4 and a hook plate 90 configured to vertically slide along the guide plate 93 and provided with two hooks 91 engageable with the grip 31 of the electric appliance 3.
  • the hook plate 90 has slots 92 into which the respective fixing bolts 94 are inserted.
  • the slots 92 are formed in the base portions of the respective hooks 91.
  • the fixing bolts 94 can fix the hook plate 90 to the guide plate 93 and can serve as sliding guide pins for enabling the hook plate 90 to smoothly slide in the up-down direction.
  • the electric appliance 3 can be reliably fixed to the cage 4. More specifically, as shown in Fig. 14A , the hook plate 90 is fixed by the fixing bolts 94 in a lifted state. Then, the electric appliance 3 existing within the storage compartment 10 is moved forward by the winding winch 8 and is accommodated within the cage 4. At this time, the winding wire 83 of the winding winch 8 passes through between the hooks 91.
  • the hoist 5 has the configuration in which the lower post 61 is directly installed upright on the ceiling surface 14 of the cubicle 1.
  • the hoist 5 may have, e.g., a configuration shown in Fig. 15.
  • Fig. 15 is an explanatory view showing a hoist 5 according to another embodiment.
  • the hoist 5 of the present embodiment is substantially identical in configuration with the hoist 5 of the aforementioned embodiment, And no description will be made on the same components as those of the aforementioned embodiment.
  • boom attachment parts 55 arranged in one-to-one correspondence to the columns of the multi-stage storage compartments 10 are provided on the ceiling surface 14 of the cubicle 1.
  • a boom 6 can be detachably attached to each of the boom attachment parts 55.
  • the boom 6 of the present embodiment includes a lower post 61 and an upper arm 62.
  • the lower post 61 can be selectively attached to each of the boom attachment parts 55.
  • the cubicle 1 is provided with the boom attachment parts 55, on which the boom 6 is attached, in the positions corresponding to the storage compartments 10.
  • the boom 6 can be detachably attached to one of the boom attachment parts 55.
  • the boom 6 can be detachably attached to one of the boom attachment parts 55 by forming through-holes in the seat plate 611, forming thread holes in each of the boom attachment parts 55 and tightening, e.g., bolts into the thread holes of each of the boom attachment parts 55 through the through-holes of the seat plate 611.
  • the description has been made on an example in which the bolts are used to fix the boom 6.
  • the boom 6 may be detachably attached to one of the boom attachment parts 55 in other manners.
  • the loading/unloading apparatus 2 of this kind may not be used for a long period of time.
  • the boom 6 and the hoisting winch 7 are normally stored in other places and may be brought to the cubicle 1 whenever there is a need to use the boom 6 and the hoisting winch 7.
  • a plurality of the boom attachment parts 55 is provided on the ceiling surface 14 of the cubicle 1.
  • one boom attachment part 55 may be provided on the ceiling surface 14 of the cubicle 1.
  • the loading/unloading apparatus 2 described above in respect of the embodiments can easily and safely perform the task of unloading the heavy electric appliances 3 arranged in multiple stages within the cubicle 1 or the task of loading a new electric appliance 3 into the cubicle 1, even if the cubicle 1 is installed in a narrow place.
  • the boom 6 of the hoist 5 is arranged on the ceiling surface 14 of the cubicle 1.
  • the installation place of the boom 6 is not limited to the ceiling surface 14 but may be any position corresponding to the storage compartments 10.
  • the boom 6 may be attached to the side surface of the cubicle 1 so as to extend above the storage compartments 10.
  • a flange is formed at the left and right sides of the horizontal member 622 of the upper arm 62 and is allowed to serve as a rail. Accordingly, the hoisting winch 7 can be attached to a specified longitudinal position of the upper arm 62.
  • the configuration of the winch attachment part 64 is not limited to the above.
  • a plurality of holes into which the upper hook 73 of the hoisting winch 7 can be inserted may be formed in the positions corresponding to the swing angles of the upper arm 62. The holes thus formed may be used as the winch attachment part 64.
  • the fixing unit of the cage 4 is configured to include the
  • a fixing unit connectable to the cubicle 1 may be appropriately arranged in the upper portion of the cage 4.
  • the fixing unit may include a fastening member such as a bolt or the like or may include a locking member like the engaging part 49.
  • the electric appliance 3 described above is provided with four casters 32.
  • the recess portions 410 formed in the seat portion 41 of the cage 4 are configured such that two front casters 32 can be dropped therein.
  • the number of the casters 32 is not limited to the above.
  • the recess portion 410 may be formed in any number as long as at least one caster 32 can be dropped therein.
EP13181161.4A 2012-08-30 2013-08-21 Loading/unloading apparatus for storage of withdrawable switchgear installations Not-in-force EP2704275B1 (en)

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CN103663230B (zh) 2016-02-24
EP2704275A1 (en) 2014-03-05
CN103663230A (zh) 2014-03-26
JP5578213B2 (ja) 2014-08-27
US9156614B2 (en) 2015-10-13
JP2014050186A (ja) 2014-03-17
KR20140029299A (ko) 2014-03-10
IN2013CH03703A (ja) 2015-04-24
US20140064889A1 (en) 2014-03-06

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